1. High-grade stack material for lower temperature rise and high performance. 2. Higher-grade commutator copper with reduced bar-to-bar surge for lower spark and increased endurance. 3. Grade 2 copper wire for high-temperature endurance. 4. Epoxy resin protects copper wire from movement, preventing damage in high-vibration applications. 5. Shaft material improved for hardness and gear durability. Color: As shown in photo Material: Copper + Plastic Package Contents: 1 x Armature Rotor Anchor Replacement Note: Other items not included. Slight color variations between batches may occur but do not affect functionality. Blade color is randomly assigned and cannot be specified. Light reflection and display differences may cause slight variations in color compared to the actual product. Measurement error allowance: +/- 1-3 cm.